/* 变量定义与高饱和艳彩风配色方案 */
        :root {
            --primary: #6366f1; /* 极光靛 */
            --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #d946ef 50%, #06b6d4 100%);
            --accent: #d946ef; /* 艳丽粉紫 */
            --cyan: #06b6d4; /* 霓虹青 */
            --dark: #0f172a; /* 深灰底字 */
            --text-main: #1e293b; /* 正文字体色 */
            --text-muted: #64748b; /* 辅助文字色 */
            --bg-light: #f8fafc; /* 全局浅色底 */
            --bg-card: #ffffff; /* 卡片白 */
            --border-color: #e2e8f0;
            --max-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* 基础重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 容器定义 */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* 标题排版规范 */
        h1, h2, h3, h4 {
            color: var(--dark);
            font-weight: 800;
        }

        .section-title {
            text-align: center;
            font-size: 2.2rem;
            margin-bottom: 0.75rem;
            position: relative;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            left: 50%;
            transform: translateX(-50%);
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-bottom: 3.5rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 按钮设计 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.85rem 2rem;
            font-size: 1rem;
            font-weight: 700;
            border-radius: 9999px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }

        .btn-gradient {
            background: var(--primary-gradient);
            color: #ffffff;
            box-shadow: 0 4px 20px rgba(217, 70, 239, 0.4);
        }

        .btn-gradient:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(217, 70, 239, 0.6);
        }

        .btn-outline {
            background: transparent;
            color: var(--dark);
            border: 2px solid var(--dark);
        }

        .btn-outline:hover {
            background: var(--dark);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* 导航栏 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 70px;
            display: flex;
            align-items: center;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo-area img {
            max-height: 40px;
            width: auto;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 1rem;
            align-items: center;
        }

        .nav-link {
            color: var(--text-main);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 600;
            transition: var(--transition);
        }

        .nav-link:hover, .ai-page-home-link {
            color: var(--primary);
        }

        .ai-page-home-link {
            text-decoration: none;
            font-weight: bold;
        }

        .nav-btn-group {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        /* 移动端菜单按钮 */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }

        /* 首屏 Hero - 无图片设计 */
        .hero-section {
            padding-top: 160px;
            padding-bottom: 80px;
            background: radial-gradient(circle at 90% 10%, rgba(217, 70, 239, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(6, 182, 212, 0.08) 0%, transparent 45%),
                        #ffffff;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary-gradient);
        }

        .hero-tag {
            display: inline-block;
            padding: 0.4rem 1.2rem;
            border-radius: 9999px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
        }

        .hero-title {
            font-size: 3rem;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            letter-spacing: -0.02em;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 2.5rem;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        /* 数据指标卡片 */
        .stats-section {
            padding: 40px 0;
            background: #ffffff;
            margin-top: -40px;
            position: relative;
            z-index: 10;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            text-align: center;
        }

        .stat-card h3 {
            font-size: 2.5rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 0.25rem;
        }

        .stat-card p {
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 通用板块样式 */
        .section-padding {
            padding: 80px 0;
        }

        .section-alt {
            background-color: #ffffff;
        }

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 1rem;
        }

        .about-features {
            margin-top: 2rem;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .about-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
        }

        .about-feature-item .icon {
            color: var(--accent);
            font-size: 1.25rem;
            font-weight: bold;
        }

        /* 全平台 AIGC 服务 & 制作 */
        .grid-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 2.25rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary-gradient);
            opacity: 0;
            transition: var(--transition);
        }

        .card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .card:hover::before {
            opacity: 1;
        }

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 1.25rem;
            display: inline-block;
        }

        .card-title {
            font-size: 1.3rem;
            margin-bottom: 0.75rem;
        }

        .card-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 1.5rem;
        }

        .tag-item {
            font-size: 0.8rem;
            padding: 0.25rem 0.75rem;
            border-radius: 99px;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            color: var(--text-main);
        }

        /* 流程步骤 */
        .process-flow {
            display: flex;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .process-step {
            flex: 1;
            min-width: 200px;
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 800;
            margin: 0 auto 1.5rem;
            box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
        }

        .step-title {
            font-size: 1.15rem;
            margin-bottom: 0.5rem;
        }

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            background: #ffffff;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        th, td {
            padding: 1.2rem;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background-color: var(--bg-light);
            color: var(--dark);
            font-weight: 700;
        }

        tr:last-child td {
            border-bottom: none;
        }

        .text-center {
            text-align: center;
        }

        .badge-premium {
            background: var(--primary-gradient);
            color: white;
            padding: 0.25rem 0.75rem;
            border-radius: 99px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 1rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 1.25rem 1.5rem;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #ffffff;
            transition: var(--transition);
        }

        .faq-header:hover {
            background: var(--bg-light);
        }

        .faq-content {
            padding: 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--text-muted);
            border-top: 0 solid var(--border-color);
        }

        .faq-content p {
            padding: 1.25rem 1.5rem;
        }

        .faq-item.active .faq-content {
            max-height: 200px;
            border-top-width: 1px;
        }

        .faq-icon::before {
            content: "+";
            font-size: 1.2rem;
            font-weight: bold;
        }

        .faq-item.active .faq-icon::before {
            content: "−";
        }

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .comment-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
        }

        .comment-header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.25rem;
        }

        .comment-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
        }

        .comment-meta h4 {
            font-size: 1rem;
            margin-bottom: 0.15rem;
        }

        .comment-meta span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .comment-text {
            font-size: 0.95rem;
            color: var(--text-main);
            font-style: italic;
        }

        /* 案例展示 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2.5rem;
        }

        .case-card {
            background: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
        }

        .case-img-container {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--bg-light);
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-card:hover img {
            transform: scale(1.05);
        }

        .case-body {
            padding: 1.5rem;
        }

        .case-tag {
            display: inline-block;
            font-size: 0.75rem;
            padding: 0.2rem 0.6rem;
            border-radius: 4px;
            background: rgba(219, 70, 239, 0.1);
            color: var(--accent);
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        /* 需求表单 */
        .form-section {
            background: radial-gradient(circle at 10% 10%, rgba(99,102,241,0.05) 0%, transparent 40%), #ffffff;
            border-top: 1px solid var(--border-color);
        }

        .form-container {
            max-width: 650px;
            margin: 0 auto;
            padding: 2.5rem;
            background: #ffffff;
            border-radius: 16px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.05);
            border: 1px solid var(--border-color);
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 700;
            font-size: 0.95rem;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 0.85rem 1.2rem;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
            background: var(--bg-light);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            background: #ffffff;
            box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
        }

        /* 页脚与排版 */
        footer {
            background-color: var(--dark);
            color: #94a3b8;
            padding: 80px 0 30px;
            border-top: 4px solid var(--accent);
        }

        footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }

        footer a:hover {
            color: var(--cyan);
        }

        footer h4 {
            color: #ffffff;
            font-size: 1.15rem;
            margin-bottom: 1.5rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 2fr;
            gap: 3rem;
            margin-bottom: 4rem;
        }

        .footer-logo img {
            max-height: 45px;
            width: auto;
            margin-bottom: 1rem;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.75rem;
        }

        .qr-codes {
            display: flex;
            gap: 1.5rem;
        }

        .qr-item {
            text-align: center;
            font-size: 0.8rem;
        }

        .qr-item img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            margin-bottom: 0.5rem;
            border: 4px solid #ffffff;
        }

        .friend-links {
            border-top: 1px solid #334155;
            padding: 1.5rem 0;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
        }

        .friend-links a {
            color: #64748b;
        }

        .friend-links a:hover {
            color: #ffffff;
        }

        .copyright-area {
            border-top: 1px solid #334155;
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.85rem;
        }

        /* 浮动客服 */
        .floating-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .float-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(217, 70, 239, 0.4);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            font-size: 1.5rem;
            border: none;
            position: relative;
        }

        .float-btn:hover {
            transform: scale(1.1);
        }

        .float-popover {
            position: absolute;
            right: 70px;
            bottom: 0;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1.25rem;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            width: 220px;
            display: none;
            text-align: center;
            color: var(--dark);
        }

        .float-popover img {
            width: 120px;
            height: 120px;
            margin: 0 auto 0.5rem;
            display: block;
        }

        .float-btn:hover .float-popover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .about-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #ffffff;
                flex-direction: column;
                padding: 1.5rem;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .nav-btn-group {
                display: none;
            }
        }